Weighing-scale.



PATENTED AY 11,1906.

M. TRINER.

WEIGHING SCALE. APPLICATION TILED AUG. 11, 1904.

4 $HEETS-SHEET 1.

INSIDE No. 819,325? PATENTED MAY 1; 1906.

- v M. TBI-NBR. Y 'WEIGHING SCALE.

-APPLIOAT ION FILED AUG. Il, 1904.

No. 819,825. PATENTED MAIL L906.

J. M. TRINER." WEIGHING SCALE.

APPLICATION FILED AUG. 11, 1904.

4 SHEETS+SHEET 4.

JAMES M. TRINER, OF CHICAGO, ILLINOIS.

, WElGHlNG-SCALE.

To all whom itmay concern:

Be it "known that I, JAMES M. TRINER, a

, citizen of the United States, residing at Chicago, inthe county ofCook and State of Illino1s,- have invented certain new and usefulImprovements in Weighing-Scales, of which the following is'a' full,clear, and exact specification;

Myinvention relates more particularly to that class of'weighing-scalesinwhich the pointer is mounted on a pivoted arbor and. operated from "the,platform-standard by means of a rack and pinion; and one of the objectsof my invention is to provide an angularly-disposed dial scale withimproved means forthus operating the pointer by the aforesaid rack andpinion movement. If the construction of scales of this class is to beinexpensive it. is necessary that substantially all parts be reduced bydies, formers, punches, '&c.; an *while theparts thus produced may be.accurately fitted without material lost motion for ordinary purposes,yet the small amount of play which inevitably occurs in the jointseither through wear or original looseriess of fit is sufficient topermit appreciable tiltin or careenin motion of the platform-stan ard,especia ly when the Weight is placed'to one side of the center of theplatform, and itis obvious that if the rack be secured directly to thestandard this careening motion will be imparted to the rack also, andthat in turn imparts partial rotation to the pinion, thereby producingfalse movement of the pointer and indicating a false weight, too lightif the standard tips in one direction and too heavy if it tips in theother direction;

My invention is designed to overcome this defect, and therefore has forits further ob-- ject to soc-combine and arrange the rack and standardthat the said tipping movement thereof will not be communicated to thepinarrange the adjusting-screw which alters the length of the connectionbetween the pointer and the supporting-spring entirely within .thecasing of the scale or to have at least the operatingportion of saidscrew thus arranged,

' so-thatit may not be tampered with or accidentally moved.

' Withthese ends in view my invention consists'in certain features ofnovelty in the con- Specification of Letters Patent.

Application filed August 11,1904. Serial No. 220,321

PatentedMay 1, 1906.

struction, combination, and arrangement of parts-whereby thesaidobjectsand certain other objects hereinafter appearing are attained, all asfully described with reference to the accompanying drawings and moreparticularly pointed out in the claims.

In the said drawings, Figure 1 .is a face view or front elevation of myimproved scale; Fig. 2 is a fragmentary View of a part of the back ofthe casing. Fig. 3 is a vertical section on the line 3 3, Fig. 4. Fig. 3is a detail view of the rack-bar pivot. Fig. 4 is a plan section on theline 4 4, Fig. 3. Fi 5 is a detail front elevation-of the rack-an -.pin-

ion mechanism. Fig. 6 is a perspective view of the yoke or support forthe rack andpinion. Fig. 7 is an enlarged transverse section thereof onthe line 7 7, Fig. 6. Fi 8 is a view similar to Fig. 6, illustrating t esame element slightly modified- Fig. 9'is a vertical section ofthe'scaleon the line 9 9, Fig.

3. Fig. 10 is a detail longitudinal sectional view on the line 1010,Fig. 5. Fig. llisa detail sideelevation of the support for the lower endof the rack-bar. Fig. 12 is an enlarged front elevation of one of thestandardsockets. Fig. 13 is the blank from which the same is produced,and Fig. 14 is a perspective view of the nut for the adj usting-screw.

1 is a casing of suitable form and construction, preferably made ofsheet metal and supported upon an appropriate base 2, the top beingclosed by a removable cover 3. As

shown in Fig. 3, the front of the casing is formed on an incline, andthe dial 4 closes the front and is also arranged on the same inchne, soas to be in a convenient position for 'reading'. The dial is providedwith a pointer 5, mounted upon a central arbor 6, which is preferablyformed integrally with a pinion 7.

The arbor 6 is journaled in the dial4, and the inner end of the pinionisprovided with a conical depression 8, in which engages a pin 9,preferablyv ofconical form and, as

shown in Figs. 3. and 6, produced by striking up a cone-shaped boss on ayoke or cross-bar 10, extending across the back of the pinion and havinarms 11, provided with lugs 12, inserted t ough the dial 4 and clenchedagainst the face thereof. By this means the pinion is provided at bothends with sufficient but inexpensive support.

Engaging with the pinion 7 is a flat rackbar 13, which is considerablyless in Width than the face of the pinion, so thatwhile it travelslongitudinally over the pinion it may also move lengthwise of the axisof the pinion without" etting out of mesh therewith. The upper en ofthis-rack-bar is confined between the pinion and one of the arms11,whereby it is held'in mesh durin its reciprocating mo- 7 tion, andthe lower en of-this rack-bar is pivotallyconnected to one arm 14 of alever between the rack-bar and the pinion; but in order that the upperend of the rack-bar may move longitudinally of the axis of the pinion inunison with its lower end, and thus main tairithis properangularrelation, the rackbar is provided with a curved slide 18, which stri gup a loop from the metal thereof, and which slide 18 rests a ainst abearin 19,

formed on or secured to t e inner face 0 the end conseqluently movestoward the dial the slide 1.8 w 1 also ride u wardl on the bearing 19and being curve or inc ined from end to end toward the center ormid-length will push the upper end of the rack-bar toward the dial 4 asrapidly as the lower end is thus moved by the lever-arm 14, and when thelever-arm 14 rises beyond that point where it moves the rack-bar13,toward the dial and begins to move it away from the dial,as will beunderstood, the curved slide 18 will correspondingly move the upper endof the rackbar away from the dial by, virtue of the inclined characterof its lower end, sliding over the bearing 19 from the mid-length towardthe lower end until all of the curved slide is above the bearing 19 oruntil the upward motion of the arm 14 ceases. In thus constructing therack-bar 13 with its curved slide 18 for producing the described resultthe curved slide may be given a length which is substantially equal withthe reciprocating movement of the rack-bar and should be so positionedon the rack bar that its upper end will be contiguous to the bearing 19when the arm' 14 is at the limit of its lower movement and its lower endin substantially the same osition with relation to the bearing 19 w enthe arm 14 is at the limit of its upward movement, the radius of the arcof the slide 18 being substantally equal to that of the are described bythe arm 14.

As the arm 14 oscillates it mayliple produced in any suitable way, as by1 order that the rack-bar 13 ma move freely without resisting therising-an -falling motion of the platform 17 in any appreciable degree,it is important that the rack-bar be pivoted. on two axes atsubstantially right angles to each other, so that it may move bothtoward and from the dial, as well as transversely in a plane at rightangles to the With that end in view axis of the pinion. the lower end ofthe rack-bar is formedwith a pair of ears 20 21, through which passes apin 22, which pivots said ears between the arm 14 and an angularprojection 14 turned backwardly at the end of the arm 14. pivot 22 issecured firmly in the arm 14 and projection 14 but at least one of theholes in the ears 20 21 is enlarged or slotted, as shown at 23, Fig. 11,so as to permit the rack-bar 13 to under 0 a transverse movementtransversely o the axis of the pinion to allow for any lateral or sideplay of the arm 14 without causin the pinion and rack-bar to bind. Inorder, 'owever, that the rack-bar may not be objectionably loose in itsconnection with the pinion, it is provided with a counterweight 24,

The lever 14 15 is secured to a cross-bar 27,

which extends across the casing and is -provided at its ends-withdownwardly-turned bearings 28, which are pivotally supported on across-rod 29, the cross-rod 29 also passing through the lever 14 15,whereby the pivotal support of the lever 14 15 is constituted bybearings located a wide distance apart, and as a result the lateral orside motion of the lever-arm 14 is reduced to the minimum. The upperside of the lever14 15 is formed with a lug 30, which passes through thecrossbar 27 and is upset or riveted, thus connecting the two partstogether.

The arm 15 is pivoted on a cross-rod 31, which is passed through andpreferably riveted in side flanges 32 of the platform-standard and whichstandard is of the peculiar construction best shown in Figs. 3 and 9.-formed of a plate which is bowed outwardly at the back, as shown at 33,to stiffen it and which is provided at its upper end with upwardextensions 34, carrying sockets 35, which receive two stems 36 on thebottom of the platform 17. The projections 34 are formed with sideflanges 37 38, throu h which pass short pivots 39, which connect t eupper end of the standard to an arm pivoted on a The izo

It is cross-rod 40 and which arm is parallel with the 1 is a cross-bar43, and upon this bar rests one end of a second cross-bar 44, whoseother end rests upon a flange 45, struck inwardly The cross-.

from the rear wall of the casing 1. bar 44 is preferably formed up outof astrip of sheet metal with side flanges 44 and has its forward orinner' end provided with a notch 46', which is saddled upon thecross-bar 43, and this end of the cross-bar 44 is also mortised into anotch 47 (see Fig. 9) in the cross-bar 43, whereby the end of thecrossbar 44 is held against both lateral and longitudinal movement. Therear or outer end of cross-bar 44 is formed with a hook 48 on each ofits side flanges 44 and which hooks engage over the flange 45, the outeror rear end of cross-bar 44 being also mortised or- '53. The lower endof this screw has a reduced portion 54, which is firmly swiveled in ayoke 55, and below the yoke 55 it is rigidly secured to a turning-wheelor thumb-piece ,56, whereby the screw may be rotated for adjusting' itrelatively to the spring. The yoke 55 has depending arms 57 arranged aconsiderable distance apart and pivoted between the flanges 32 of thestandard on the rod 31 contiguous to said flanges, so as to preventlateral movement of the rod 31. By this means'the lever-arm 15 isconnected to and supported from this spring, and the center ofthesupport of said lever-arm and its connection withboth the spring andthe standard are one and the same, and consequently when the standardtips in either direction it will merely oscillate about this center 31without altering the'position of the rack-bar 13, and consequently thelost motion which ordinarilyoccurs at the centers 39 40 and whichpermits the platform to tip or careen when the weight is arranged to oneside of the center'will not result in a false movement of the pointer 5nor in the, false indication of the weight. It will also be observedthat as the arm 15 rises and falls, carrying the center 31 back andforth on the are described by said arm, and consequently deflecting thespring from the perpendicular, the spring will nevertheless bemaintained in astraight line by ust referred to is constituted by aplate 41, I

hanger 62, and a note reason of the swivel connection at its lowerendwiththe center 31, constituted by the yoke 5557 and the pivot-rod 31.V The back of the standard 33 has an a erture 58, through which theoperating-w eel or thumb-piece 56 projects, so that it will beaccessible to the fin er of the operator for rotating the screw. Tnorder that this wheel may not be tampered with or accidentally moved, itis arranged entirely within the easing 1, and in order that it maybereached for operation when necessary the casing is pro-' I vided inthe back with an opening 59, which,

if desired, may be closed by -a suitable door or shutter 60, which has aslot 61 at its upper end, whereby it is supported on a suitable wherebyit may be dropped over a button 64 and held in place.

The projections 34 of the standard are each formed with a flange 65-, asshown in Fig. 13, and on this is produced a lug 66, which when theflange 65 is folded around the stem 36 to produce a socket for receivingsaid stem engages in a notch 67 in the opposite edge of the blank, Fig.13, and the edges of this notch 67 are then upset over the edges of thelug 66, so as to lock the two sides of theblank together and produce thesocket.

In the modification shown in Fig. 8 the yoke for supporting the pinionand retaining the rack-bar has the cone 9 formed on the edge-of theplate instead of on the face, and the bearing 19 is similarly formed,the arms 11 being arranged flat and provided with angular projections12", on which. are formed the lugs 12", which correspond with the lugs12 and pass through the dial, as described with reference to the lugs12, the projections 12 being arranged against the back of the dial forbracing the plate 11 and preventing it from tipping. The edge of theplate 11 is also formed with additional lugs 12, which pass through thedial, like the lugs 12.

Having thus described my invention, what I claim as new therein, anddesire to secure by Letters Patent, is

1. In a scale, the combination of a pointer, an arbor therefor havingapinion, a platformstandard, means connected with said standard foryieldingly sustaining the same, a pivoted lever pivoted at one end tosaid standard at a point contiguous to the point of connection betweenit and said sustaining means, and a rack-bar connected to the other endof the said lever and engaging said pinion.

2. In a scale, the combination of a pointer, an arbor therefor havingapinion,aplatfor1nstandard, means connected with said standard foryieldingly sustaining the same, a pivoted lever pivoted at one end tosaid stand ard at a point contiguous to the point of connection betweenit and said sustaining means and a rack-bar engaging said pinion andpivoted to the other end of the said lever on 63 in its lower edge,

crossed axes whereby the rack-bar may oscillate both lengthwise andtransversely of the lever.

3. In a scale, the combination of a pointer, a pinion for rotating thesame, a platforn'i, a rack-bar engaging said pinion, a curved slide anda bearing therefor, one secured to and carried by the rack-bar and theother fixed with relation to the rack-bar and contiguous to the pinionand over which the rac k-bar slides, a pivot ed lever having one endpivoted to said rack-bar for reciprocating it, an operative connectionbetween said platform and pivoted lever, and means for yieldinglysustaining the platform.

4. in a scale, the combination of a pointer, a pinion for operating thesamc,'a reciprocatory rack-bar, a curved slide thereon, a hearing forsaid slide fixed with relation thereto, a pivoted lever operativelyconnected with said rack-bar for reciprocating it, a platform operatively connected with saidlever and means for yieldingly sustaining saidplatform.

5. In a scale, the combination of a pointer, a pinion for operating thesame, a pivoted lever, a rack-bar engaging the pinion and pivoted on anaxis extending transversely of the lever, a bearin for said rack-bar, acounterweight for holding the rack-bar against said bearing, a platformoperatively connected with said lever, and means for yieldinglysustaining said platform.

6. in a scale, the combination of a pointer, a pinion for operating thesame, a pivoted lever, a rack -bar pivoted to said lever on crossedaxessoas to oscillate transversely and longitudinally of said lever, abearing against which said rack-bar rests and slides, a counterweighthaving its center of gravity out of center with both of said axeswhereby it will hold the rack-bar against the pinion and also againstits said bearing, a platform operatively connected with said lever andmeans for yieldingly sustaining said platform.

7. In a scale, the combination of a pointer,

a pinion for operating the same, a rack-bar engaging said pinion, ayokeg'in which. said pinion is journaled and which embraces the p 1nionand rack-bar, said pinion having a countersink in one end. and the yokea projecting pin engaging in said countersink, a pivoted lever pivotedto said rack-bar, a platform connected with said lever and means foryieldingly sustaining said platform.

8 In a scale, the combination of a dial normally inclined to thevertical, a pivoted pointer therefor, a pinion for operating saidpointer, a I21Cl{-l).8,1 engaging said pinion, means for holding saidrack-bar parallel with the dial and at right angles to the pinion, a

pivoted lever pivoted at one end to one end of said rack-bar forreciprocating it, the other therefor, a pinion for operating saidpointer,

a rack-bar engaging said pinion, a platform, a pivoted lever havingpivotal connection with one end of said rack-bar and platform wherebythe rack-bar will be reciprocated,

the other end of the rack-bar being free, means I for holding saidrack-bar parallel with the' dial and at right angles to said pinion, andmeans for yieldin'gly sustaining the platform. 10. In a scale, thecombination of a pointer, av casing provided with an aperture, aplatform having a connection extending through said casing, mechanismwithin said casing operatively connected with the platform and pointerfor operating the latter by the movement of the platform, said mechanismcomprising means for yieldingly sustaining the platform, and anadjusting means located entirely Within the casing and com prising anoperating member located opposite said aperture whereby the operatingmember will be accessible therethrough from the outside.

11. In a scale, the combination of a casin having a notched cross-barand a notched wall, a second cross-bar let into said notches, abifurcated platform-standard straddling said second cross-bar, a springconnected to said standard'and to said second cross-bar, means formaintaining the equilibrium of said standard and a pointer operativelyconnected with the standard. 1'

12. In a scale, the combination of a casin havingta removable cover, aremovable crossbar supported within the casing below and held in placeby said cover, a platform-standard, a spring secured to said'standardand cross-bar, means for maintaining" the equilibrium of said standard,a pointer and means operatively connecting the same with the standard.

13. In a scale, the combination of'a platform-standard comprising aplate having side flanges and upwardly-extending projections at bothsides thereof, a platform having depending stems around whichsaidprojections are folded to form sockets therefor, a spring supportedindependently of said standard at one end, a swivel connecting the otherend of said standard thereto on atransverse axis ex- 14. In a scale thecombination of apointer,

a pinion for operating the same, a dial normally inclined to thevertical, behind which said pinion is arranged, a pivoted lever ar- 7right an les to the axis of t ranged behind said inclined dial andmovable I tively connected with said lever, and means in a plane at anangle thereto, a rack-bar engaging the pinion and pivoted at one end onan axls extending transversely of one end of the lever, means for holdinthe rack-bar at e pinion during the osoil ation of the lever, a platformoperafor yieldingly sustaining said platform.

JAMES M. TRINER.

Witnesses:

F. A. HOPKINS,

ALLSTADT.

